/* --- STILI BASE --- */
        :root {
            --primary: #004b87; /* Blu professionale */
            --accent: #e60000;  /* Rosso emergenza */
            --bg: #f8f9fa;
            --text: #333;
            --bottom-bar-height: 65px;
            --header-height: 60px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
        body { background-color: var(--bg); color: var(--text); padding-top: var(--header-height); padding-bottom: var(--bottom-bar-height); }
        ul { list-style: none; }
        a { text-decoration: none; color: inherit; }

        /* --- HEADER SUPERIORE --- */
        .app-header {
            position: fixed; top: 0; left: 0; width: 100%; height: var(--header-height);
            background: white; display: flex; align-items: center; justify-content: space-between;
            padding: 0 15px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); z-index: 1000;
        }
        .logo-area { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.1rem; color: var(--primary); }
        .logo-icon svg { width: 24px; height: 24px; fill: var(--primary); }
        .btn-chiama { background: var(--accent); color: white; padding: 8px 15px; border-radius: 20px; font-weight: bold; font-size: 0.9rem; display: flex; align-items: center; gap: 5px;}
        .btn-chiama svg { width: 16px; height: 16px; fill: white; }

        /* --- BARRA DI NAVIGAZIONE IN BASSO (STICKY) --- */
        .bottom-bar {
            position: fixed; bottom: 0; left: 0; width: 100%; height: var(--bottom-bar-height);
            background: white; box-shadow: 0 -2px 15px rgba(0,0,0,0.1); display: flex;
            justify-content: space-around; align-items: center; z-index: 1001; padding-bottom: env(safe-area-inset-bottom);
        }
        .nav-item { display: flex; flex-direction: column; align-items: center; justify-content: center; width: 25%; color: #666; cursor: pointer; transition: color 0.2s; }
        .nav-item.active { color: var(--primary); }
        .nav-item svg { width: 24px; height: 24px; fill: currentColor; margin-bottom: 3px; }
        .nav-item span { font-size: 0.7rem; font-weight: 600; }

        /* --- MENU A PANNELLO (BOTTOM SHEETS) --- */
        .bottom-sheet {
            position: fixed; bottom: var(--bottom-bar-height); left: 0; width: 100%; max-height: 80vh;
            background: white; border-radius: 20px 20px 0 0; box-shadow: 0 -5px 20px rgba(0,0,0,0.15);
            transform: translateY(110%); transition: transform 0.3s ease-in-out; z-index: 999;
            overflow-y: auto; padding: 20px 15px;
        }
        .bottom-sheet.open { transform: translateY(0); }
        .sheet-title { font-size: 1.2rem; font-weight: bold; margin-bottom: 15px; color: var(--primary); border-bottom: 2px solid #eee; padding-bottom: 10px;}
        
        /* Liste nei menu */
        .menu-list li a, .menu-list li .accordion-btn {
            display: block; padding: 12px 0; border-bottom: 1px solid #f0f0f0; font-size: 1rem; color: var(--text); width: 100%; text-align: left; background: none; border: none; cursor: pointer;
        }
        
        /* Accordion per Aree Locali e Chi Siamo */
        .accordion-btn { display: flex; justify-content: space-between; align-items: center; font-weight: 600; }
        .accordion-btn svg { width: 20px; height: 20px; transition: transform 0.3s; }
        .accordion-btn.active svg { transform: rotate(180deg); }
        .accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.3s ease-out; background: #f9f9f9; border-radius: 5px;}
        .accordion-content ul { padding: 5px 15px; }
        .accordion-content li a { border-bottom: none; padding: 8px 0; font-size: 0.95rem; color: #555; display: flex; align-items: center; gap: 8px;}
        .accordion-content li a::before { content: "›"; font-weight: bold; color: var(--primary); }

        /* Overlay scuro sfondo */
        .overlay-bg { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); opacity: 0; pointer-events: none; transition: opacity 0.3s; z-index: 998; }
        .overlay-bg.active { opacity: 1; pointer-events: all; }
        
        /* Contenuto finto pagina per scroll */
        .page-content { padding: 20px; line-height: 1.6; }